topoisomerase i

Topoisomerase I Inhibitor 9 (compound 3d), a specific inhibitor of leishmanial topoisomerase IB, exhibits antileishmanial activity, demonstrating an IC50 value of 34.81μM against L. donovani promastigotes [1].

Topoisomerase I inhibitor 7 (Compound 8) is a potent Topoisomerase I inhibitor that significantly reduces tumor growth by up to 79% and extends the lifespan of mice bearing P388 lymphoma transplants by 153%.

Topoisomerase I inhibitor 8, a hexacyclic analogue of camptothecin, is also a potent inhibitor of topoisomerase I and is toxic to tumour cells.

Topoisomerase I inhibitor 5 is an efficient topoisomerase I inhibitor with an IC50 value, effectively disrupting DNA and inhibiting topoisomerase I activity. It induces apoptosis in MCF-7 cells and arrests the cell cycle at the G1 phase, displaying potency in reversing P-gp-mediated resistance to Adriamycin [1].

Topoisomerase I II inhibitor 3 (compound 7) is a potent dual inhibitor of topoisomerase I (Topo I) and II (Topo II) that inhibits the PI3K Akt mTOR signaling pathway, subsequently inhibiting cell proliferation, invasion, and migration, and inducing apoptosis. This compound has research value in liver cancer.

Topoisomerase I inhibitor 4 (compound 7a) is a potent inhibitor of topoisomerase I activity, effectively inhibiting the proliferation of various cancer cell lines, including HepG2, A549, MCF-7, and HeLa, with IC50 values of 1.20 μM, 2.09 μM, 1.56 μM, and 1.92 μM, respectively. Thus, Topoisomerase I inhibitor 4 holds promise for cancer research applications [1].

Topoisomerase I (Compound ZML-14) inhibitor 3 induces HepG2 cell apoptosis and arrests cell cycle at G2 M phase. Topoisomerase I inhibitor 3 is an inhibitor of topoisomerase I that interact with topoisomerase I-DNA complex [1].

Topoisomerase I/II inhibitor 4 is a potent dual inhibitor of topoisomerase I (Topo I) and II (Topo II) with inhibitory effects on cell proliferation, invasion and migration, and induction of apoptosis, and can be used to study hepatocellular carcinoma.

Topoisomerase I inhibitor 2 (ZML-8) is a highly selective DNA topoisomerase I (Top1) inhibitor that impedes Top1 activity, causing DNA damage. It arrests the cell cycle at the G2 M phase and induces apoptosis, exhibiting anti-tumor effects [1].

Topoisomerase I inhibitor 6 (Compound 3) is a potent Topoisomerase I inhibitor that traps the DNA-Top1 cleavage complex and exhibits low cytotoxicity in non-cancerous cell lines, making it valuable for research.

Topoisomerase I II inhibitor 2 (compound 1a) is a DNA topoisomerase I II dual inhibitor that significantly reduces xenograft tumor growth in a mouse model, indicating its potential use in treating liver cancer. It is a potent topoisomerase inhibitor with IC50 values of 6.83 μM and 9.82 μM for LM9 cells and Huh7 cells [1].

Compound 13, a topoisomerase I inhibitor 10, selectively inhibits leishmanial topoisomerase IB and exhibits antileishmanial activity. Specifically, it demonstrates efficacy against L. donovani promastigotes with an IC50 value of 27.91 μM [1].

Sophoridine (Dihydro-5-episophocarpine), a natural anticancer drug, has been used in China for decades. A series of novel N-substituted Sophoridinic acid derivatives were synthesized and evaluated for their cytotoxicity with 1 as the lead. The structure-activity relationship indicated that introduction of an aliphatic acyl on the nitrogen atom might significantly enhance the anticancer activity. Among the compounds, 6b bearing bromoacetyl side-chain afforded a potential effect against four human tumor cell lines (liver, colon, breast, and lung). The mechanism of action of 6b is to inhibit the activity of DNA topoisomerase I, followed by the S-phase arrest and then cause apoptotic cell death, similar to that of its parent 1.

Camptothecin (CPT) belongs to the alkaloid group of natural products and is a specific DNA topoisomerase I (Topo I) inhibitor (IC50=679 nM) with specificity. Camptothecin has antitumor activity and induces apoptosis.

(S)-10-Hydroxycamptothecin (10-HCPT) is a DNA topoisomerase I inhibitor used as a clinical therapeutic agent against hepatoma.

SN-38 (NK012) is the active metabolite of Irinotecan, a DNA topoisomerase I (Topo I) inhibitor, which inhibits DNA and RNA synthesis (IC50=0.077/1.3 μM). SN-38 has antitumor activity and induces autophagy.

Irinotecan Hydrochloride (CPT-11 hydrochloride) is the hydrochloride salt of a semisynthetic derivative of camptothecin. Irinotecan, a prodrug, is converted to a biologically active metabolite 7-ethyl-10-hydroxy-camptothecin (SN-38) by a carboxylesterase-converting enzyme. One thousand-fold more potent than its parent compound irinotecan, SN-38 inhibits topoisomerase I activity by stabilizing the cleavable complex between topoisomerase I and DNA, resulting in DNA breaks that inhibit DNA replication and trigger apoptotic cell death. Because ongoing DNA synthesis is necessary for irinotecan to exert its cytotoxic effects, it is classified as an S-phase-specific agent.

Irinotecan (CPT-11), a derivative of camptothecin, is an inhibitor of DNA topoisomerase I (Topo I). Irinotecan has antitumor activity by preventing DNA strand reattachment through binding to the Topo I complex, resulting in double-stranded DNA breaks and cell death.

Betulinic acid (ALS-357) is a pentacyclic lupane-type triterpene derivative of betulin (isolated from the bark of Betula alba, the common white birch) which has antiretroviral, antimalarial, and anti-inflammatory properties, as well as a more recently discovered potential as an anticancer agent, by inhibition of topoisomerase.

Doxorubicin hydrochloride (Adriamycin) belongs to the anthracycline class of antibiotics and is an inhibitor of human DNA topoisomerase I II (IC50=0.8 2.67 μM). Doxorubicin hydrochloride exhibits cytotoxicity and antitumor activity. Doxorubicin hydrochloride reduces the phosphorylation of AMPK and its downstream target protein acetyl coenzyme A carboxylase, and induces apoptosis and autophagy.

CL2A-SN-38 is a drug-linker conjugate composed of a potent a DNA Topoisomerase I inhibitor SN-38 and a linker CL2A to make antibody drug conjugate (ADC).. CL2A-SN-38 is composed of a potent a DNA Topoisomerase I inhibitor SN-38 and a linker CL2A to make antibody drug conjugate (ADC). CL2A-SN-38 provides significant and specific antitumor effects against a range of human solid tumor types. CL2A is a noncleavable complicated PEG8- and triazole-containing PABC-peptide-mc linker. CL2A is cleavable through pH sensitivity, giving rise to bystander effect, and binds the antibody at a cysteine residue via a disulfide bond. .

Gimatecan HCl (ST1481 HCL) is a potent topoisomerase I inhibitor. Gimatecan is an orally bioavailable camptothecin analogue with antitumor activity.

Simmitecan hydrochloride is a camptothecin derivative, a topoisomerase I inhibitor with anticancer activity, which can be used to study is solid tumors.

Daniquidone (Batracylin) is a potent dual inhibitor of DNA topoisomerase I and DNA topoisomerase II with cytotoxic and antiproliferative activity that induces DNA fragmentation for the study of neoplasms, immune disorders, and lymphatic disorders.

Pegamotecan (PEG-camptothecin) is a topoisomerase I (TOP1) inhibitor with anticancer activity, and it is used in the treatment of esophageal, non-small cell lung and pancreatic cancers.

XR-11576 HCl is a novel orally active dual topoisomerase I and II inhibitor with antitumor activity.

Tubulin inhibitor 35 (Tubulin IN 35) is a potent dual inhibitor of topoisomerase I and microtubule protein polymerization with antitumor activity, inhibits migration and invasion of MGC-803 and RKO cell lines, interrupts the cell cycle and induces apoptosis.

Topovale (ARC111) is a potent inhibitor of topoisomerase I. Topovale inhibits hypoxia-mediated accumulation of hypoxia-inducible factor-1alpha. Topovale exhibited low nM cytotoxicity against a panel of cancer cells. Topovale cytotoxicity as well as Topovale-induced apoptosis was reduced > 100-fold in CPT-resistant topoisomerase I (TOP1)-deficient P388/CPT45 cells as compared with P388 cells.

Lamellarin D, for example, displays strong cytotoxic activity against tumor cell lines, and is a potent topoisomerase I inhibitor.

DRF-1042 HCl is an orally active camptothecin analog with antitumor activity, inhibits DNA topoisomerase I, and is used in the study of refractory solid tumors.

Gimatecan (STI481) is a potent topoisomerase I inhibitor. Gimatecan is an orally bioavailable camptothecin analogue with antitumor activity.

DRF-1042, an orally active camptothecin analog, exhibits anticancer and insecticidal activities by inhibiting DNA topoisomerase I. It has been studied for its efficacy against solid tumors, including prostate and colon cancers.

β-Lapachone (ARQ-501) is a specific DNA topoisomerase I inhibitor, and no inhibitory activities against DNA topoisomerase II or ligase.

Doxorubicin (Adriamycin) is a Topoisomerase II (Top2) inhibitor with antineoplastic activity.

Topotecan (NSC-609669) is a Topoisomerase I inhibitor,and is an antineoplastic agent used to treat ovarian cancer that works by inhibiting DNA topoisomerases.

Chimmitecan ((S)-9-Allyl-10-hydroxycamptothecin) is a potent topoisomerase I inhibitor with exceptional in vitro and in vivo activity.

Groenlandicine is a protoberberine alkaloid from Coptidis Rhizoma. Groenlandicine exhibits moderate inhibitory effect with IC50 value of 154.2 μM for human recombinant aldose reductase (HRAR). Groenlandicine selectively induces topoisomerase I-mediated DN

Rubitecan (9-Nitrocamptothecin) is a DNA topoisomerase I inhibitor. It inhibits DNA topoisomerase I and increases the fraction of supercoiled DNA in a cell-free assay in a concentration-dependent manner.Rubitecan is a semisynthetic agent related to camptothecin with potent antitumor and antiviral properties.

Amonafide (NSC-308847,AS1413)(AS1413) produces protein-associated DNA-strand breaks through a topoisomerase II-mediated reaction, but does not produce topoisomerase I-mediated DNA cleavage.

Dxd (OQM5SD32BQ) is a potent inhibitor of DNA topoisomerase I with an IC50 of 0.31 μM. It is used as a conjugated drug of HER2-targeting ADC.

9-amino-CPT (Aminocamptothecin) is an inhibitor of topoisomerase I with potent anticancer activity.

Heveaflavone inhibits Topoisomerase I and scavenges DPPH free radical with anti-proliferation and antioxidant effects.

Proscillaridin A is a natural product.It is a potent poison of topoisomerase I II activity with IC50 values of 30 nM and 100 nM, respectively.

Coralyne chloride is a protoberberine with strong anticancer activity. It can be used to prepare Coralyne derivatives, a fluorescent DNA-based molecular rectifier built into DNA duplexes through site-specific insertion. It acts as a topoisomerase I toxic molecule, inducing topoisomerase I-mediated DNA cleavage.

TAS-103 dihydrochloride (BMS-247615 dihydrochloride) is a novel anticancer agent targeting both topoisomerase (Topo) I and Topo II.

Ardisin is a Topoisomerase I and II enzyme inhibitor. Ardisin may have antioxidant effects.

Irinotecan-d10 Hydrochloride is a deuterated compound of Irinotecan Hydrochloride. Irinotecan Hydrochloride has a CAS number of 100286-90-6. Irinotecan Hydrochloride is the hydrochloride salt of a semisynthetic derivative of camptothecin. Irinotecan, a prodrug, is converted to a biologically active metabolite 7-ethyl-10-hydroxy-camptothecin (SN-38) by a carboxylesterase-converting enzyme. One thousand-fold more potent than its parent compound irinotecan, SN-38 inhibits topoisomerase I activity by stabilizing the cleavable complex between topoisomerase I and DNA, resulting in DNA breaks that inhibit DNA replication and trigger apoptotic cell death. Because ongoing DNA synthesis is necessary for irinotecan to exert its cytotoxic effects, it is classified as an S-phase-specific agent.

Afeletecan is a water-soluble camptothecin derivative. Afeletecan stabilizes the topoisomerase I-DNA covalent complex and forms an enzyme-drug-DNA ternary complex. Both the initial cleavage reaction and religation steps are inhibited and subsequent collis

CH-0793076 (TP3076) TFA, a hexacyclic camptothecin analog, is active drug and major metabolite of TP300. CH-0793076 TFA inhibits DNA topoisomerase I with an IC 50 of 2.3 μM. CH-0793076 TFA is efficacious against cells expressing BCRP (breast cancer resistance protein) [1] .

Irinotecan hydrochloride trihydrate (CPT-11 HCl Trihydrate) keeps DNA from unwinding by inhibiting topoisomerase 1.